.header{
    margin-top:80px; 
    .img{
        text-align: center;
        margin-bottom: 60px;
        img{
            width: 280px;
        }
    }
    .switch{
        display: flex;
        justify-content: center;
        font-size: 28px;
        .item{
            padding: 10px 0;
            margin: 0 40px;
        }
        .active{
            color:#2395ff;
            font-weight: 700;
            border-bottom: 2px solid #2395ff;/*no*/
        }
    }
}